Pipe-repair sleeve.



E. M. COYNE.

PIPE REPAIR SLEEVE.

APPLICATION men JAN-2, 1914.

1,140,501 Patented May 25, 1915.

/2 I 5 Q U m L 1 4 Q 0 u f? 3 .9 WITNESSES /0 L d/77000 6 0 f7 ,4INVENTOR ATTORNEY.

THE NORRIS PETERS 60.. PHOTO-LITHQ. WASHINGTON, D 6.2

EDMUND M. COYNE, OF BIRMINGHAM, ALABAMA, ASSIGNOB 0F ONE-HALF TO WILLIAMV. MENTZELL.

PIPE-REPAIR SLEEVE.

Specificationof Letters Patent.

Patented May 25, 1915.

To all whom it may concern:

Be it known that I,.EDMUND M. COYNE, a citizen of the United States ofAmerica, residing at Birmingham, in the county of Jefferson and State ofAlabama, have invented certain new and useful Improvements inPipe-Repair Sleeves, of which the following is a specification.

My invention relates to improvements in repair sleeves for pipes whichare so designed and equipped as to adapt them to quickly and effectivelystop leaks at any point in the pipe or in joints thereof and whichfurther provides a simple and economical means for tapping a branch pipeonto the main pipe at any point and without shutting off the steam orliquid pressure in the main pipe to make such branch connection.

A further object of my invention is to provide a clamp connection forthe repair sleeve which is essentially designed for use in cases wherethe leakage at the end of a sleeve joint would have a tendency to blowthe repair sleeve endwise and strip the sleeve coupling from the pipe.

My invention further comprises the novel details of construction andarrangement of parts which in their preferred embodiment are illustratedin the accompanying drawings, in which Figure 1 is a top plan viewshowing my improved sleeve and clamp connected in position on a pipe.Fig. 2 shows in plan view a half section of the pipe and clamp. Fig. 3

is an end elevation of Fig. 1.

Similar reference numerals refer to similar parts throughout thedrawings.

In the drawings I show the repair sleeve designed for repairing leaks inpipe joints.

Here it is frequently the case that the leaksoccur at one or the otherend of the sleeve and if the leak, after the repair sleeve has beenapplied, should open up suddenly it would have a tendency to blow therepair sleeve lengthwise of the pipe and with the result that it mightstrip the sleeve connection, such as 22, from the pipe line and aserious accident might result. To meet these conditions I provide arepair sleeve formed of half sections 23 which are recessed to receivein them the sleeve 22 and at each end of the recess the sections fitsnugly about the pipe. The end joints are packed by a packing 11 andsectional glands 12 which are attached to the ends of the casingsections by bolts 13. The casing sections are provided with side flanges4: which are bolted together by bolts 5. In addition I provide a clampcomprising half sections 2 1 which are flanged and bolted tightly aboutone section 25 of the pipe, the clamp being afiiXed on the opposite endof the sleeve joint 22 from that at which the leak has occurred. Afterthe repair sleeve has been applied'to the pipe in the manner described,I provide one or more bars or connecting rods 26 which, for convenience,connect the clamp 24 to the repair sleeve 23 by being bolted to theflanges of the latter by the elongated end bolts 26 at adjacent ends ofthe repair sleeve and clamp. Preferably such connecting rods are appliedon each side of the sleeve and clamp, as shown in Fig. 2. By means ofthe clamp I can secure a strong and rigid connection to the pipe and bymeans of the connecting bars 26 I am enabled to hold the repair sleeveagainst any tendency to be blown lengthwise of the piping so that itsend near the clamp sleeve would not strike and strip the sleeveconnection 23 from the pipe.

I provide a plurality of lateral ports which are tapped through the sidewalls of the casing 23 into the chamber that receives sleeve 22, theseports being threaded and adapted to receive a nipple 9 to which asuitable valve casing 10 is connected. I preferably provide at least oneof these nipples 9 in each section of the sleeve. In order to permit theglands to be inserted while the steam or liquid pressure is still on andtherefore flowing in substantial volume through the leaking sleeve orjoint, the valves 10 are opened and pipes or hose 14 are connected tothe valve casings and lead to a suitable point of discharge sufficientlyremote to prevent any interference with the work of applying the glands.As soon as the repair sleeve has been well packed the valves 10 areclosed, the hose 14 are removed, and the repairing is complete.

I utilize any suitable packing strip for packing the joint between themeeting edges of the sleeve sections, any kind of packing strip beingeffective when laid lengthwise between the flat machined side edges ofthe sleeve and the edges drawn together by the bolts 5 to compress thepacking and efl'ec tively seal the side joints of the sleeve. The

glands described take care of the end packin of the sleeve.

aving thus described my invention, What I claim as new and desire tosecure by Letters Patent, is

A repair equipment for pipes comprising in combination a repair sleeveformed of longitudinal half sections, each half section having sideflanges adapted to abut, means to bolt the flanges together to fastenthe sleeve about the pipe to be repaired, a sectional vpipe clamp formedof half sections having flanged meeting edges, means tobolt said flangestogether to attach said clamp to the pipe, and connecting bars havingtheir 15 ends bolted to the flanges of the sleeve and clamp,substantially as and for the purposes described. j In testimony whereofI affix my signature in presence of tWo Witnesses. EDMUND M. COYNE.

Witnesses:

WILLIAM V. MENTZELL, N ORME WELSH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

